| 摘要 |
PROBLEM TO BE SOLVED: To reduce impact generated when a large force acts on a sash in wind time.SOLUTION: A shock absorber 13 is connected to the sash 5, and is provided for transmitting an opening-closing force to the sash 5 and making force in the direction for preventing displacement act on the sash 5 when the sash 5 is displaced in the direction for closing window opening. Thus, the sash 5 and the shock absorber 13 always become a connected constitution, and are constituted for transmitting the opening-closing force to the sash 5 via the shock absorber 13. That is, the shock absorber 13 bears a transmission mechanism for transmitting the opening-closing force to the sash 5. The shock absorber 13 always becomes a state capable of making damping force act on the sash 5. Thus, even if the large force acts on the sash 5 in strong wind time, since the damping force starts to act on the sash 5 simultaneously when the sash 5 starts to be displaced, an impact force can be reduced. |
